ServiceStack.Razor Reference is System.Web.Razor, Version=2.0.0.0, It is older version
ServiceStack.Razor
<Reference Include="System.Web.Razor, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>..\..\lib\System.Web.Razor.dll</HintPath>
</Reference>
replace to(use newest lib):
<Reference Include="System.Web.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<HintPath>....\packages\Microsoft.AspNet.Razor.3.2.3\lib\net45\System.Web.Razor.dll</HintPath>
<Private>True</Private>
</Reference>
1
vote

We’re now referencing the official System.Web.Razor package from v4.5.0